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How do I parse a mail header?

by faq_monk (Initiate)
on Oct 08, 1999 at 00:32 UTC ( #769=perlfaq nodetype: print w/ replies, xml ) Need Help??

Current Perl documentation can be found at perldoc.perl.org.

Here is our local, out-dated (pre-5.6) version:

For a quick-and-dirty solution, try this solution derived from page 222 of the 2nd edition of ``Programming Perl'':

    $/ = '';
    $header = <MSG>;
    $header =~ s/\n\s+/ /g;      # merge continuation lines
    %head = ( UNIX_FROM_LINE, split /^([-\w]+):\s*/m, $header );

That solution doesn't do well if, for example, you're trying to maintain all the Received lines. A more complete approach is to use the Mail::Header module from CPAN (part of the MailTools package).

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